Is the LXM05CD57N4 still being built?
The LXM05CD57N4 carries a discontinued status — the line is closed and no new factory stock is shipping out of the OEM channel, so any unit that lands on a quote today is independent-distribution inventory pulled against the order. Buyers replacing an installed LXM05CD57N4 should treat the next move as a confirmed replacement candidate sourced separately rather than a guaranteed drop-in.
What it is and where it sits in the cabinet
The catalog entry is a motion servo drive from the Lexium 05 family, designated LXM05C, integrating an EMC filter and sized at 6 kW nominal at a 4 kHz switching frequency — meaning the unit is aimed squarely at mid-power positioning axes, not high-speed spindles or low-power stepper-style duty. Power input is three-phase 380-480 V with a -15...10 % tolerance and absolute limits of 323-528 V, which gives the panel builder some headroom against a saggy plant bus but does not rescue a single-phase supply — the three-phase requirement is non-negotiable. Line current draws 14 A at 480 V and 17.7 A at 380 V, inrush peaks at 60 A, and the drive tolerates a prospective line short-circuit current up to 22 kA — the upstream breaker or fused disconnect must clear within that envelope or the drive becomes the fuse. Maximum leakage current is rated 30 mA, which is the figure that drives the sizing of any upstream RCD — a 30 mA device will nuisance-trip on a single healthy drive, so the standard practice on a multi-drive cabinet is a 300 mA selective type.
How the current rating behaves with switching frequency
Continuous output current is 25 A at 4 kHz and drops to 20 A at 8 kHz — the 4 kHz default buys full torque capability, and raising the PWM to 8 kHz for quieter motor acoustics costs 20 % of the continuous current budget. Transient output current is 40 A at 4 kHz and 30 A at 8 kHz, both for a 3-second window — the figure an axis-sizing engineer cares about for acceleration peaks and short-cycle overloads, not the steady-state nameplate. Overvoltage category is III, which lines the drive up for direct connection to a building-style distribution bus without an extra isolation transformer ahead of it.
Control-side connections and fieldbus posture
The control block carries six discrete inputs, one analogue input, and Modbus access with no polarization impedances on the bus — meaning the integrator terminates the bus externally rather than relying on internal biasing. Supply frequency window is 50/60 Hz nominal with a ±5 % tolerance and absolute limits of 47.5-63 Hz, so the drive tolerates engine-generator sets and weak grid segments without nuisance trips.